結果
問題 | No.533 Mysterious Stairs |
ユーザー | 37zigen |
提出日時 | 2018-08-25 23:27:21 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 260 ms / 5,000 ms |
コード長 | 2,571 bytes |
コンパイル時間 | 2,314 ms |
コンパイル使用メモリ | 78,320 KB |
実行使用メモリ | 101,968 KB |
最終ジャッジ日時 | 2024-06-27 02:36:25 |
合計ジャッジ時間 | 5,702 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 52 ms
36,748 KB |
testcase_01 | AC | 51 ms
36,696 KB |
testcase_02 | AC | 52 ms
36,524 KB |
testcase_03 | AC | 52 ms
36,892 KB |
testcase_04 | AC | 51 ms
36,440 KB |
testcase_05 | AC | 50 ms
36,688 KB |
testcase_06 | AC | 52 ms
36,992 KB |
testcase_07 | AC | 51 ms
36,780 KB |
testcase_08 | AC | 53 ms
36,904 KB |
testcase_09 | AC | 53 ms
36,572 KB |
testcase_10 | AC | 52 ms
36,296 KB |
testcase_11 | AC | 51 ms
36,912 KB |
testcase_12 | AC | 53 ms
36,936 KB |
testcase_13 | AC | 52 ms
36,992 KB |
testcase_14 | AC | 52 ms
36,704 KB |
testcase_15 | AC | 53 ms
36,404 KB |
testcase_16 | AC | 54 ms
36,700 KB |
testcase_17 | AC | 57 ms
36,952 KB |
testcase_18 | AC | 60 ms
37,408 KB |
testcase_19 | AC | 60 ms
37,028 KB |
testcase_20 | AC | 95 ms
45,744 KB |
testcase_21 | AC | 84 ms
45,364 KB |
testcase_22 | AC | 148 ms
65,368 KB |
testcase_23 | AC | 255 ms
101,968 KB |
testcase_24 | AC | 260 ms
101,796 KB |
testcase_25 | AC | 92 ms
45,584 KB |
testcase_26 | AC | 219 ms
82,504 KB |
testcase_27 | AC | 121 ms
54,368 KB |
ソースコード
import java.io.IOException; import java.io.InputStream; import java.util.Arrays; import java.util.Comparator; import java.util.NoSuchElementException; public class Main { public static void main(String[] args) { new Main().run(); } final long MOD = (long) 1e9 + 7; void run() { Scanner sc = new Scanner(); int N = sc.nextInt(); long[][] dp = new long[N + 1][4]; dp[0][0] = 1; for (int i = 0; i < N; ++i) { for (int pre = 0; pre <= 3; ++pre) { for (int ne = 1; ne <= 3; ++ne) { if (pre == ne || i + ne > N) continue; dp[i + ne][ne] = (dp[i + ne][ne] + dp[i][pre]) % MOD; } } } System.out.println((dp[N][1] + dp[N][2] + dp[N][3]) % MOD); } void tr(Object... objects) { System.out.println(Arrays.deepToString(objects)); } class Scanner { private final InputStream in = System.in; private final byte[] buffer = new byte[1024]; private int ptr = 0; private int buflen = 0; private boolean hasNextByte() { if (ptr < buflen) { return true; } else { ptr = 0; try { buflen = in.read(buffer); } catch (IOException e) { e.printStackTrace(); } if (buflen <= 0) { return false; } } return true; } private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1; } private boolean isPrintableChar(int c) { return 33 <= c && c <= 126; } public boolean hasNext() { while (hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte(); } public String next() { if (!hasNext()) throw new NoSuchElementException(); StringBuilder sb = new StringBuilder(); int b = readByte(); while (isPrintableChar(b)) { sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } public long nextLong() { if (!hasNext()) throw new NoSuchElementException(); long n = 0; boolean minus = false; int b = readByte(); if (b == '-') { minus = true; b = readByte(); } if (b < '0' || '9' < b) { throw new NumberFormatException(); } while (true) { if ('0' <= b && b <= '9') { n *= 10; n += b - '0'; } else if (b == -1 || !isPrintableChar(b)) { return minus ? -n : n; } else { throw new NumberFormatException(); } b = readByte(); } } public int nextInt() { long nl = nextLong(); if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException(); return (int) nl; } public double nextDouble() { return Double.parseDouble(next()); } } }